Ballchain stainless steel polished.
Stainless steel is rust free and will withstand acids and therefore the chain of choice in the food industry, laboratories, off_shore etc.
This chain is often used as neckless chain by sailors, surfers and people working on ships or oil rigs, often in combination with a dogtag.
The 4,5 mm has the standard size for use with blinds.
Nickel free : contains a very low percentage of nickel